I don't know where you're getting your information from. "Hamsters" is actually a misleading term because there is only one hamster on Earth and he is immortal. He travels through time and overlaps his own timeline frequently, creating the illusion of multiple hamsters. As he ages, he grows very slowly and the patterns on his fur change, which is why he looks different sometimes. You should probably say a few hail hamsters now because he doesn't like when people make jokes about his demise — and he can bite.